





"""simple docstring"""





import json
import os
from typing import Dict, List, Optional, Tuple

import regex as re

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


SCREAMING_SNAKE_CASE__   =  logging.get_logger(__name__)


SCREAMING_SNAKE_CASE__   =  {
    "vocab_file": "vocab.json",
    "merges_file": "merges.txt",
    "tokenizer_config_file": "tokenizer_config.json",
}

SCREAMING_SNAKE_CASE__   =  {
    "vocab_file": {
        "facebook/blenderbot_small-90M": "https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/vocab.json"
    },
    "merges_file": {
        "facebook/blenderbot_small-90M": "https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/merges.txt"
    },
    "tokenizer_config_file": {
        "facebook/blenderbot_small-90M": (
            "https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/tokenizer_config.json"
        )
    },
}

SCREAMING_SNAKE_CASE__   =  {"facebook/blenderbot_small-90M": 512}


def      UpperCAmelCase__				(    SCREAMING_SNAKE_CASE	:		int     ):







      '''simple docstring'''




      lowerCAmelCase    		=			set()
      lowerCAmelCase    		=			word[0]
      for char in word[1:]:
            pairs.add((prev_char, char)     )
            lowerCAmelCase    		=			char

      lowerCAmelCase    		=			set(SCREAMING_SNAKE_CASE     )
      return pairs






class 						lowercase   (   _UpperCAmelCase   ):
      _SCREAMING_SNAKE_CASE							      = VOCAB_FILES_NAMES
      _SCREAMING_SNAKE_CASE							      = PRETRAINED_VOCAB_FILES_MAP
      _SCREAMING_SNAKE_CASE							      = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
      _SCREAMING_SNAKE_CASE							      = ['input_ids', 'attention_mask']





      def __init__(			self ,		lowercase ,		lowercase ,		lowercase="__start__" ,		lowercase="__end__" ,		lowercase="__unk__" ,		lowercase="__null__" ,		**lowercase ,		)						->	str:
            super().__init__(unk_token=lowercase ,		bos_token=lowercase ,		eos_token=lowercase ,		pad_token=lowercase ,		**lowercase					)

            with open(lowercase ,		encoding="""utf-8"""					) as vocab_handle:
                  lowerCAmelCase    		=			json.load(lowercase					)
            lowerCAmelCase    		=			{v: k for k, v in self.encoder.items()}
            with open(lowercase ,		encoding="""utf-8"""					) as merges_handle:
                  lowerCAmelCase    		=			merges_handle.read().split("""\n"""					)[1:-1]
            lowerCAmelCase    		=			[tuple(merge.split()					) for merge in merges]
            lowerCAmelCase    		=			dict(zip(lowercase ,		range(len(lowercase					)					)					)					)
            lowerCAmelCase    		=			{}





      @property
      def        _snake_case     (			self					)						->	int:
            return len(self.encoder					)





      def        _snake_case     (			self					)						->	Dict:
            return dict(self.encoder ,		**self.added_tokens_encoder					)





      def        _snake_case     (			self ,		lowercase					)						->	str:
            if token in self.cache:
                  return self.cache[token]
            lowerCAmelCase    		=			re.sub("""([.,!?()])""" ,		r""" \1""" ,		lowercase					)
            lowerCAmelCase    		=			re.sub("""(')""" ,		r""" \1 """ ,		lowercase					)
            lowerCAmelCase    		=			re.sub(r"""\s{2,}""" ,		""" """ ,		lowercase					)
            if "\n" in token:
                  lowerCAmelCase    		=			token.replace("""\n""" ,		""" __newln__"""					)

            lowerCAmelCase    		=			token.split(""" """					)
            lowerCAmelCase    		=			[]
            for token in tokens:
                  if not len(lowercase					):
                        continue

                  lowerCAmelCase    		=			token.lower()
                  lowerCAmelCase    		=			tuple(lowercase					)
                  lowerCAmelCase    		=			tuple(list(word[:-1]					) + [word[-1] + """</w>"""]					)
                  lowerCAmelCase    		=			get_pairs(lowercase					)

                  if not pairs:
                        words.append(lowercase					)
                        continue

                  while True:
                        lowerCAmelCase    		=			min(lowercase ,		key=lambda lowercase					: self.bpe_ranks.get(lowercase ,		float("""inf"""					)					)					)
                        if bigram not in self.bpe_ranks:
                              break
                        lowerCAmelCase		,						lowerCAmelCase    		=			bigram
                        lowerCAmelCase    		=			[]
                        lowerCAmelCase    		=			0

                        while i < len(lowercase					):
                              try:
                                    lowerCAmelCase    		=			word.index(lowercase ,		lowercase					)
                                    new_word.extend(word[i:j]					)
                                    lowerCAmelCase    		=			j
                              except ValueError:
                                    new_word.extend(word[i:]					)
                                    break

                              if word[i] == first and i < len(lowercase					) - 1 and word[i + 1] == second:
                                    new_word.append(first + second					)
                                    i += 2
                              else:
                                    new_word.append(word[i]					)
                                    i += 1
                        lowerCAmelCase    		=			tuple(lowercase					)
                        lowerCAmelCase    		=			new_word
                        if len(lowercase					) == 1:
                              break
                        else:
                              lowerCAmelCase    		=			get_pairs(lowercase					)
                  lowerCAmelCase    		=			"""@@ """.join(lowercase					)
                  lowerCAmelCase    		=			word[:-4]

                  lowerCAmelCase    		=			word
                  words.append(lowercase					)
            return " ".join(lowercase					)





      def        _snake_case     (			self ,		lowercase					)						->	List[str]:
            lowerCAmelCase    		=			[]

            lowerCAmelCase    		=			re.findall(r"""\S+\n?""" ,		lowercase					)

            for token in words:
                  split_tokens.extend(list(self.bpe(lowercase					).split(""" """					)					)					)
            return split_tokens





      def        _snake_case     (			self ,		lowercase					)						->	int:
            lowerCAmelCase    		=			token.lower()
            return self.encoder.get(lowercase ,		self.encoder.get(self.unk_token					)					)





      def        _snake_case     (			self ,		lowercase					)						->	str:
            return self.decoder.get(lowercase ,		self.unk_token					)





      def        _snake_case     (			self ,		lowercase					)						->	str:
            lowerCAmelCase    		=			""" """.join(lowercase					).replace("""@@ """ ,		""""""					).strip()
            return out_string





      def        _snake_case     (			self ,		lowercase ,		lowercase = None					)						->	Tuple[str]:
            if not os.path.isdir(lowercase					):
                  logger.error(f'Vocabulary path ({save_directory}) should be a directory'					)
                  return
            lowerCAmelCase    		=			os.path.join(
                lowercase ,		(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]					)
            lowerCAmelCase    		=			os.path.join(
                lowercase ,		(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]					)

            with open(lowercase ,		"""w""" ,		encoding="""utf-8"""					) as f:
                  f.write(json.dumps(self.encoder ,		indent=2 ,		sort_keys=lowercase ,		ensure_ascii=lowercase					) + """\n"""					)

            lowerCAmelCase    		=			0
            with open(lowercase ,		"""w""" ,		encoding="""utf-8"""					) as writer:
                  writer.write("""#version: 0.2\n"""					)
                  for bpe_tokens, token_index in sorted(self.bpe_ranks.items() ,		key=lambda lowercase					: kv[1]					):
                        if index != token_index:
                              logger.warning(
                                  f'Saving vocabulary to {merge_file}: BPE merge indices are not consecutive.'
                                  """ Please check that the tokenizer is not corrupted!"""					)
                              lowerCAmelCase    		=			token_index
                        writer.write(""" """.join(lowercase					) + """\n"""					)
                        index += 1

            return vocab_file, merge_file













"""simple docstring"""





def      UpperCAmelCase__				(    SCREAMING_SNAKE_CASE	:		str     ):







      '''simple docstring'''




      lowerCAmelCase    		=			""""""
      for ch in key:
            if ch == " " or ch not in key_no_dups and ch.isalpha():
                  key_no_dups += ch
      return key_no_dups


def      UpperCAmelCase__				(    SCREAMING_SNAKE_CASE	:		str     ):







      '''simple docstring'''




      lowerCAmelCase    		=			[chr(i + 65     ) for i in range(26     )]
      # Remove duplicate characters from key
      lowerCAmelCase    		=			remove_duplicates(key.upper()     )
      lowerCAmelCase    		=			len(SCREAMING_SNAKE_CASE     )
      # First fill cipher with key characters
      lowerCAmelCase    		=			{alphabet[i]: char for i, char in enumerate(SCREAMING_SNAKE_CASE     )}
      # Then map remaining characters in alphabet to
      # the alphabet from the beginning
      for i in range(len(SCREAMING_SNAKE_CASE     )				,		26     ):
            lowerCAmelCase    		=			alphabet[i - offset]
            # Ensure we are not mapping letters to letters previously mapped
            while char in key:
                  offset -= 1
                  lowerCAmelCase    		=			alphabet[i - offset]
            lowerCAmelCase    		=			char
      return cipher_alphabet


def      UpperCAmelCase__				(    SCREAMING_SNAKE_CASE	:		str				,		SCREAMING_SNAKE_CASE	:		dict[str, str]     ):







      '''simple docstring'''




      return "".join(cipher_map.get(SCREAMING_SNAKE_CASE				,		SCREAMING_SNAKE_CASE     ) for ch in message.upper()     )


def      UpperCAmelCase__				(    SCREAMING_SNAKE_CASE	:		str				,		SCREAMING_SNAKE_CASE	:		dict[str, str]     ):







      '''simple docstring'''




      lowerCAmelCase    		=			{v: k for k, v in cipher_map.items()}
      return "".join(rev_cipher_map.get(SCREAMING_SNAKE_CASE				,		SCREAMING_SNAKE_CASE     ) for ch in message.upper()     )


def      UpperCAmelCase__				(    ):







      '''simple docstring'''




      lowerCAmelCase    		=			input("""Enter message to encode or decode: """     ).strip()
      lowerCAmelCase    		=			input("""Enter keyword: """     ).strip()
      lowerCAmelCase    		=			input("""Encipher or decipher? E/D:"""     ).strip()[0].lower()
      try:
            lowerCAmelCase    		=			{"""e""": encipher, """d""": decipher}[option]
      except KeyError:
            raise KeyError("""invalid input option"""     )
      lowerCAmelCase    		=			create_cipher_map(SCREAMING_SNAKE_CASE     )
      print(func(SCREAMING_SNAKE_CASE				,		SCREAMING_SNAKE_CASE     )     )


if __name__ == "__main__":
       import doctest

       doctest.testmod()
       main()






